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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: traps.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | \ traps.fth 2.6 94/05/04 | |
43 | \ Copyright 1985-1990 Bradley Forthware | |
44 | ||
45 | hex | |
46 | ||
47 | headers | |
48 | code %i6! ( n -- ) tos %i6 move sp tos pop c; | |
49 | code %i7! ( n -- ) tos %i7 move sp tos pop c; | |
50 | code %o6! ( n -- ) tos %o6 move sp tos pop c; | |
51 | code %o6@ ( n -- ) tos sp push %o6 tos move c; | |
52 | code tbr@ ( -- adr ) tos sp push tos rdtbr c; | |
53 | code tbr! ( adr -- ) tos 0 wrtbr sp tos pop c; | |
54 | code psr@ ( -- n ) tos sp push tos rdpsr c; | |
55 | code psr! ( n -- ) tos 0 wrpsr sp tos pop c; | |
56 | code wim@ ( -- n ) tos sp push tos rdwim c; | |
57 | code wim! ( n -- ) tos 0 wrwim sp tos pop c; | |
58 | code y@ ( -- n ) tos sp push tos rdy c; | |
59 | code y! ( n -- ) tos 0 wry sp tos pop c; | |
60 | : cwp! ( window# -- ) psr@ h# 1f invert and or psr! ; | |
61 | : cwp@ ( -- window# ) psr@ h# 1f and ; | |
62 | : pil@ ( -- priiority ) psr@ h# f00 and 8 >> ; | |
63 | : pil! ( priority -- ) 8 << psr@ h# f00 invert and or psr! ; | |
64 | alias spl pil! ( priority -- ) | |
65 | headerless | |
66 | ||
67 | : traps-on ( -- ) psr@ h# 20 or psr! ; | |
68 | : traps-off ( -- ) psr@ h# 20 invert and psr! ; | |
69 | ||
70 | : setl4 ( n -- setlow sethi ) | |
71 | dup 0a >> ( n hibits ) h# 29000000 + ( n sethi ) | |
72 | swap h# 3ff and h# a8052000 + swap | |
73 | ; | |
74 | ||
75 | h# 10 constant /vector | |
76 | : vector-adr ( vector# -- adr ) /vector * tbr@ h# ffff.f000 and + ; | |
77 | ||
78 | defer vector-l! ( l adr -- ) ' l! is vector-l! | |
79 | headers | |
80 | ||
81 | : vector! ( handler-adr trap# -- ) | |
82 | vector-adr ( handler trap-entry-adr ) | |
83 | swap setl4 ( trap-entry-adr setlow sethi ) | |
84 | 2 pick vector-l! ( trap-entry-adr setlow ) | |
85 | over la1+ vector-l! ( trap-entry-adr ) \ handler %l4 set | |
86 | h# 81c52000 over 2 la+ vector-l! ( trap-entry-adr ) \ %l4 0 %g0 jmpl | |
87 | h# a1480000 over 3 la+ vector-l! ( trap-entry-adr ) \ %l0 rdpsr | |
88 | drop | |
89 | ; | |
90 | ||
91 | \ Assumes handler was installed with vector! | |
92 | : vector@ ( trap# -- handler-adr ) | |
93 | vector-adr ( trap-adr ) | |
94 | dup l@ h# 0a << ( trap-adr hibits ) | |
95 | swap la1+ l@ h# 3ff and or ( handler-adr ) | |
96 | ; |